coffeeScript demo

#能够直接在浏览器嵌入coffee-script.js 解析xx.coffee脚本,但真正正式使用时不建议这样使用,coffee-script.js下载地址：http://coffeescript.org/extras/coffee-script.js

#本地安装coffee 能够把写好的xx.coffee 编译成 xx.js  命令：coffee -c xx.coffee

#变量

myVar = 1

#数组

myArray = [1, 2, 3, 4, 5]

#对象

leader =

  name: "wj"

  age: 25

alert(leader.name)

#函数 if x == null x default 6

square = (x = 6) ->

  x * x

alert(square(myVar))

alert(square())



#推断

#三目运算

myVar = 0 if leader.name == 'wj'

alert(myVar)



if myVar == 0

  myVar = 1

else if myVar == 1

  myVar = 2

else

  myVar = 3





#遍历

myVar = myVar + x for x in myArray;



myVar = myVar+x for x in myArray when x == 5



alert(myVar)